Indicator



June 27, A SUMBS 1,915,456

INDICATOR Filed May 18, 1931 3 Sheets-Sheet 1 I nventor f1 llomey A.SUMBS INDICATOR June 27, 1933..

Filed May 18, 1931 3 Sheets-Sheet 2 flltomey June 27, 1933. SUMBS1,915,456

' INDICATOR Filed May 18, 1951 5 Sheets-Sheet 3 Inventor flllorney ks rwas

Patented June 2 7, 1933 ALOYS scams, or 'SAUK RAPIDS, 'MINNESOTAINDICATOR *Apphcation filed May 1s,

This invention relates generally toindicators andmore'particularly tonew and useful improvements in indicators for use on wood grinders inpaper mills and has for some of its most important objects to provide adevice of'this character which will be comparatively simple inconstruction, strong, durable, e'ificient and reliable in use, compactand which may be manufactured at low cost.

All of the foregoing and still further ob- 1 jectsj and advantages ofthe invention will become apparent from a study of the follow-,

ing specification, taken in connection with the accompanying drawingswherein like characters of reference designate corresponding partsthroughout the several views, and wherein Figure 1 is a View in frontelevation showing a pair of indicators in accordance with this inventionmounted in position on a wood grinder.

Figure 2 is a view in front elevation of one, of the indicators.

Figure 3 is a view in vertical section through the device.

Figure 4 is a sectional View taken substantially on the line H of Figure3.

Figure 5 is a sectional view taken substan-- tially on the line' 5-5 ofFigure 3.

Figure 6 is a sectional view through the grooved pulley or spool.

Figure 7 is a view in top plan of the device.

Figure 8 is a detail view partially in section and bracket.

Referring. now to the drawings in detail, it will be seen that thereference numeral 1 designates a substantially annular housing havingdetachably secured on its front a cover plate 2 which constitutes adial, as will be more fully hereinafter explained. At its rear end thehousing is closed and is provided with a peripheral flange 3 havingnotches or recesses 4 therein for the reception of the kee ers 5 throughthe medium of which a cover 6 is detachably secured on the rear end ofthe housing 1. The cover 6 has secured thereon, as by screws 7 (seeFigure 8), a bracket 8 for mounting the indicator in position on thesides of the partially in plan of the attaching 1931. Serial No.538,362.

grinder 9, as illustrated to advantage in Figure 1 of the drawings.

Spaced metallic frames or plates 10 and 11 are mounted in the housing 1in spaced relation to thefront and rear of said housing. A shaft 12 isjournaled in the cover 2 and the plate 10, said shaft extendingrotatably through the cover 2, a ball bearing 13 being provided thereforcentrally in the cover. A pointer 14 is fixed on the outer end portionof the shaft 12. A shaft 15 is journaled in the plates or frames 10 and11 and has oneend disposed adjacent the cover 2 and gears 16 and 17 arefixed on the shaft 15 on opposite plate or frame 10. The gear 16 mesheswith a comparatively small gear'18 which is fixed on the shaft 12between the cover 2 andthe plate or frame 10.

A shaft 19 is journaled in the platesor frames 10 and 11 and the rearwall 20 of the housing 1, said shaft extending into the cover 6on therear end of the housing. A comparatively large gear 21 is looselymounted on the shaft 19 between the plates or frameslO and 11 and mesheswith the gear .17. A ratchet wheel22 is fixed on the shaft 19 adjacentthe *gear 21 for rotation with said shaft 19. U A

pawl 23 is pivotally mounted on one side of V the gear 21 and ismaintained in engagement with the ratchet disk or wheel 22 by a suitablespring and in this manner the gear 21 is operatively connected with theratchet wheel for actuation in'one direction thereby.

A spring 2 such as a block spring, encircles .the shaft 19 between theplate or frame 11 and the rear end wall20 of the housing 1 and has oneendsecured to the shaft 19 and its other anchored to the housing forrotating the'shaft 19 in one direct-ion, as will be understood. The endportion of the shaft 19 which is disposed Within the cover 6 has fixedthereon a peripherally grooved [or channelled pulley 25 upon which achain 26 is windable, one end of the chainb'eing anchored to the pulley,as clearly seen in Figure 6 of the draws ings. F rom'a consideration ofFigure 6 it will also be seen that the end portion of the shaft 19 uponwhich the pulley 25 is mounted is fiattened on opposite sides to preventrotation of the pulley relative to said shaft. The

chain 26 is operable through an opening provided therefor in the cover'6 and has its other end connected to the outer end of the rod 27 whichprojects from the pocket 28 of the wood grinder 9 upon which theindicator is mounted. It is understood, of course, that an indicator inaccordance with this invention is mounted on each of the pockets28 ofthe wood grinder. V

The housing 1 is substantially leakproof for the reception of a suitablelubricant and is provided with removable screw plugs 29 and 30 in itstop and bottom, respectively, the plug 29 providing means for fillingthe housing with a lubricant and the plug 30 providing means fordrainingthe housing. The plates or frames 10 and 11 are secured together inspaced relation to each other through the pulley This operation mediumof the screws 31 having spacing sleeves f 32 thereon between the framesor plates.

a In use, as the grinding of the wood in the machine proceeds normally,the rods 27 are drawn inwardlyin the usual manner with the result thatthe chain is unwound from the 25, thus actuating the pointer 14 Jthrough the various shafts, gears and the pawland ratchet, as will beunderstood. of the device winds the spring 24. Thus, by obse'rving thepointer 14 relative to the dial which is constituted by the cover 2, itcan be determined whether or not the wood is being ground. After thewood in the pocketshas been ground and said pock -ets are refilled, therods 27 are raised in the usual manner and the spring 24 rotates theshaft 19 in the opposite direction to rewind the chain 26 onthe pulley25. The pointer of said wall with a ointer for cooperation with saiddial, a sha journaled in the back wall of the housing and extending inrear of said wall, a spring in the housing and connected with the lastnamed shaft andalso connected with the housing and coiled about theshaft and adapted to be put under tension by turning of the shaft in onedirection and also adapted to turn the shaft in the opposite direction,gearing disposed in said housing and inter osed between the last namedshaft and the first named shaft; the said housing being oil-tight andhaving normally enclosed means for same, a hollow cover connected to theback wall of the-housing and receiving the rearwardly extended portionof the second named shaft and equipped "with a bracket for the mountingof the indicator on a grinder, said hollow cover also having an openingfor the passage of a cable, and a pulley mounted on the rearwardlyextended portion of the second named shaftand disposed in said hollowcover and adapted for. the connection ofthe said cable. i

In testimony whereof I aflix my signature. ALOYS SUM S.

14 is reset and the indicator is then ready for the next grindingoperation. The spring 24 is under slight tension when the grindingoperation is begun and when the chain 26 is wound onthe pulley 25. Itwill be understood that only the shaft 19 and'the ratchet wheel 22 arerotated when the spring 24 rewinds the chain on the pulley. This isaccomplished through the medium of the ratchet wheel 22 and the pawl 23.j

It is believed that the many advantages of an indicator in accordancewith this invention will be readily understood, and although thepreferred embodiment of the invention is as illustrated anddescribed, it-is to be understood that changes inthe details of construction andinthe combination and arrangement-of parts'may be resorted to which willfall within the scope of the invention as claimed.

ing an operator I a wood grlnder What'is claimed. is I The hereindescribed indicator fora priswhen the wood in a poc et of is approachingexhaustion,

consisting essentially of a housing having a dial on its face, a shaftjournaled in the front wall of said housing and equipped in front

